Measuring instrument and power receiving module

Abstract

A power receiving module is a power receiving module housed in a portable measuring instrument, wherein the measuring instrument includes a housing portion that is capable of housing a standard battery having a standardized size, and a lid portion that covers the standard battery while the standard battery is housed in the housing portion, and the power receiving module has a first portion having the same shape as the standard battery and a second portion having the same shape as the lid portion, and includes a power receiving antenna that receives power transferred from a wireless power transfer apparatus that transfers power wirelessly.

What is claimed is: 
     
         1 . A power receiving module housed in a portable measuring instrument, wherein
 the measuring instrument includes:
 a housing portion that is capable of housing a standard battery having a standardized size, and 
 a lid portion that covers the standard battery while the standard battery is housed in the housing portion, and 
   the power receiving module has a first portion having the same shape as the standard battery and a second portion having the same shape as the lid portion, and includes a power receiving antenna that receives power transferred from a wireless power transfer apparatus that transfers power wirelessly.   
     
     
         2 . The power receiving module according to  claim 1 , wherein
 the power receiving antenna is provided in the second portion.   
     
     
         3 . The power receiving module according to  claim 1 , wherein
 the power receiving module includes a secondary battery to be charged with power received by the power receiving antenna.   
     
     
         4 . The power receiving module according to  claim 3 , wherein
 the power receiving module further includes a primary battery smaller than the standard battery.   
     
     
         5 . The power receiving module according to  claim 4 , wherein
 the primary battery is detachably attached to the power receiving module.   
     
     
         6 . The power receiving module according to  claim 4 , wherein
 when remaining capacity of the secondary battery is equal to or greater than a threshold value, power of the secondary battery is transferred to an electric circuit of the measuring instrument, and when the remaining capacity is less than the threshold value, power of the primary battery is transferred to the electric circuit.   
     
     
         7 . The power receiving module according to  claim 1 , wherein
 the first portion and the second portion have a cylindrical shape, and   a diameter of the first portion is smaller than a diameter of the second portion.   
     
     
         8 . The power receiving module according to  claim 1 , further comprising:
 a secondary battery that is to be charged with power received by the power receiving antenna;   a charging circuit that supplies, to the secondary battery, power transferred from the wireless power transfer apparatus; and   a power transfer circuit that transfers power received from the secondary battery to the measuring instrument, wherein   the charging circuit is provided between the power receiving antenna and the secondary battery in the first portion, and   the secondary battery is provided between the charging circuit and the power transfer circuit in the first portion.   
     
     
         9 . A portable measuring instrument comprising:
 a housing portion that is capable of housing a standard battery having a standardized size;   a lid portion that covers the standard battery while the standard battery is housed in the housing portion; and   a power receiving module that is housed in the housing portion when the standard battery is not housed in the housing portion and includes a power receiving antenna receiving power transferred from a wireless power transfer apparatus that transfers power wirelessly, wherein   the power receiving module includes a first portion having the same shape as the standard battery and a second portion having the same shape as the lid portion.   
     
     
         10 . The measuring instrument according to  claim 9 , wherein
 the power receiving module includes a secondary battery to be charged with power received by the power receiving antenna and a primary battery smaller than the standard battery, and   the measuring instrument further includes a display part that displays that charging is necessary using power of the primary battery when remaining capacity of the secondary battery is less than a threshold value.